TM 55-2350-224-14Blocking for Front of CarrierBlocking for Rear of CarrierNail the two inside pieces with three 12-D nails through each opposite side. Nail the outside pieces to inside placeswith four 12-D nails on each side. Place each block against the correct track and toe-tail the heel of the block withtwo 30-D nails. Toe nail each side of the block with two 40-D nails.Center the 2" x 6" x 14" lumber crosswise against heel of front and rear chocks and nail to car floor with four 20-D nails.Nail top piece to bottom piece in a like manner. Locate one 2" x 4" x 24" Iumber on each side of the front and rearchocks and nail to car floor with four 20-D nails.Place longitudinally against the outside of each track and nail to car floor with 20-D nails spaced approximately8 inches. Nail top piece to lower piece in like manner.Figure 3-3. Railcar blocking details. All dimenions are in inches.3-5